ReaderBasedParserBase (Jackson JSON parser 0.9.1)

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org.codehaus.jackson.impl
Class ReaderBasedParserBase

java.lang.Object
  org.codehaus.jackson.JsonParser
      org.codehaus.jackson.impl.ReaderBasedParserBase

Direct Known Subclasses:: ReaderBasedNumericParser

public abstract class ReaderBasedParserBase
extends JsonParser
extends JsonParser

This is a simple low-level input reader base class, used by JSON parser. The reason for sub-classing (over composition) is due to need for direct access to character buffers and positions.

Author:: Tatu Saloranta

Nested Class Summary

Nested classes/interfaces inherited from class org.codehaus.jackson.JsonParser
`JsonParser.NumberType`

Field Summary
`protected long`	`mCurrInputProcessed` Number of characters that were contained in previous blocks (blocks that were already processed prior to the current buffer).
`protected int`	`mCurrInputRow` Current row location of current point in input buffer, starting from 1
`protected int`	`mCurrInputRowStart` Current index of the first character of the current row in input buffer.
`protected JsonToken`	`mCurrToken`
`protected char[]`	`mInputBuffer` Current buffer from which data is read; generally data is read into buffer from input source, but not always (especially when using nested input contexts when expanding parsed entity references etc).
`protected int`	`mInputLen` Index of character after last available one in the buffer.
`protected int`	`mInputPtr` Pointer to next available character in buffer
`protected IOContext`	`mIOContext` I/O context for this reader.
`protected Reader`	`mReader` Reader that can be used for reading more content, if one in use.
`protected TextBuffer`	`mTextBuffer` Buffer that contains contents of String values, including field names if necessary (name split across boundary, contains escape sequence, or access needed to char array)
`protected int`	`mTokenInputCol` Column on input row that current token starts; 0-based (although in the end it'll be converted to 1-based)
`protected int`	`mTokenInputRow` Input row on which current token starts, 1-based
`protected long`	`mTokenInputTotal` Total number of characters read before start of current token.

Constructor Summary
`protected`	`ReaderBasedParserBase(IOContext ctxt, Reader r)`

Method Summary
`protected void`	`closeReader()`
`protected static String`	`getCharDesc(int ch)`
`abstract JsonLocation`	`getCurrentLocation()` Method that returns location of the last processed character; usually for error reporting purposes.
`protected char`	`getNextChar(String eofMsg)`
`long`	`getTokenCharacterOffset()`
`int`	`getTokenColumnNr()`
`int`	`getTokenLineNr()`
`protected boolean`	`loadMore()`
`protected void`	`markLF()`
`protected void`	`markLF(int inputPtr)`
`protected void`	`releaseBuffers()` Method called to release internal buffers owned by the base reader.
`protected void`	`reportError(String msg)`
`protected void`	`reportInvalidEOF(String msg)`
`protected void`	`reportUnexpectedChar(int ch, String comment)`
`protected void`	`skipCR()`
`protected void`	`skipLF()`
`protected void`	`throwInternal()`
`protected void`	`wrapError(String msg, Throwable t)`

Methods inherited from class org.codehaus.jackson.JsonParser
`close, getCurrentName, getCurrentToken, getDecimalValue, getDoubleValue, getIntValue, getLongValue, getNumberType, getNumberValue, getParsingContext, getText, getTextCharacters, getTextLength, getTextOffset, getTokenLocation, hasCurrentToken, nextToken`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

mIOContext

protected final IOContext mIOContext

I/O context for this reader. It handles buffer allocation for the reader.

mReader

protected Reader mReader

Reader that can be used for reading more content, if one in use. May be null, if input comes just as a full buffer, or if Reader has been closed.

mCurrToken

protected JsonToken mCurrToken

mInputBuffer

protected char[] mInputBuffer

Current buffer from which data is read; generally data is read into buffer from input source, but not always (especially when using nested input contexts when expanding parsed entity references etc).

mInputPtr

protected int mInputPtr

Pointer to next available character in buffer

mInputLen

protected int mInputLen

Index of character after last available one in the buffer.

mCurrInputProcessed

protected long mCurrInputProcessed

Number of characters that were contained in previous blocks (blocks that were already processed prior to the current buffer).

mCurrInputRow

protected int mCurrInputRow

Current row location of current point in input buffer, starting from 1

mCurrInputRowStart

protected int mCurrInputRowStart

Current index of the first character of the current row in input buffer. Needed to calculate column position, if necessary; benefit of not having column itself is that this only has to be updated once per line.

mTokenInputTotal

protected long mTokenInputTotal

Total number of characters read before start of current token. For big (gigabyte-sized) sizes are possible, needs to be long, unlike pointers and sizes related to in-memory buffers.

mTokenInputRow

protected int mTokenInputRow

Input row on which current token starts, 1-based

mTokenInputCol

protected int mTokenInputCol

Column on input row that current token starts; 0-based (although in the end it'll be converted to 1-based)

mTextBuffer

protected final TextBuffer mTextBuffer

Buffer that contains contents of String values, including field names if necessary (name split across boundary, contains escape sequence, or access needed to char array)

Constructor Detail